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* x86/oprofile: Implement multiplexing setup/shutdown functionsRobert Richter2009-07-201-36/+40
| | | | | | | | This patch implements nmi_setup_mux() and nmi_shutdown_mux() functions to setup/shutdown multiplexing. Multiplexing code in nmi_int.c is now much more separated. Signed-off-by: Robert Richter <robert.richter@amd.com>
* oprofile: Grouping multiplexing code in op_model_amd.cRobert Richter2009-07-201-34/+41
| | | | | | | | This patch moves some multiplexing code to the new function op_mux_fill_in_addresses(). Also, the whole multiplexing code is now at a single location. Signed-off-by: Robert Richter <robert.richter@amd.com>
* oprofile: Introduce op_x86_phys_to_virt()Robert Richter2009-07-203-69/+55
| | | | | | This new function translates physical to virtual counter numbers. Signed-off-by: Robert Richter <robert.richter@amd.com>
* x86/oprofile: Fix initialization of switch_indexRobert Richter2009-07-201-7/+9
| | | | | | | | Variable switch_index must be initialized for each cpu. This patch fixes the initialization by moving it to the per-cpu init function nmi_cpu_setup(). Signed-off-by: Robert Richter <robert.richter@amd.com>
* x86/oprofile: Use per_cpu() instead of __get_cpu_var()Robert Richter2009-07-201-2/+2
| | | | | | | __get_cpu_var() calls smp_processor_id(). When the cpu id is already known, instead use per_cpu() to avoid generating the id again. Signed-off-by: Robert Richter <robert.richter@amd.com>
* x86/oprofile: Fix usage of NUM_CONTROLS/NUM_COUNTERS macrosRobert Richter2009-07-201-2/+2
| | | | | | | | Use the corresponding macros when iterating over counter and control registers. Since NUM_CONTROLS and NUM_COUNTERS are equal for AMD cpus the fix is more a cosmetical change. Signed-off-by: Robert Richter <robert.richter@amd.com>
* oprofile: Implement performance counter multiplexingJason Yeh2009-07-206-20/+267
| | | | | | | | | | | | | | | | | | | | | The number of hardware counters is limited. The multiplexing feature enables OProfile to gather more events than counters are provided by the hardware. This is realized by switching between events at an user specified time interval. A new file (/dev/oprofile/time_slice) is added for the user to specify the timer interval in ms. If the number of events to profile is higher than the number of hardware counters available, the patch will schedule a work queue that switches the event counter and re-writes the different sets of values into it. The switching mechanism needs to be implemented for each architecture to support multiplexing. This patch only implements AMD CPU support, but multiplexing can be easily extended for other models and architectures. There are follow-on patches that rework parts of this patch. Signed-off-by: Jason Yeh <jason.yeh@amd.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
* x86/oprofile: Whitespaces changes onlyRobert Richter2009-07-144-20/+20
| | | | | | | This patch fixes whitespace changes of code that will be touched in follow-on patches. Signed-off-by: Robert Richter <robert.richter@amd.com>
* x86/oprofile: Rework and simplify nmi_cpu_setup()Robert Richter2009-07-141-10/+3
| | | | | | | | | This patch removes the function nmi_save_registers(). Per-cpu code is now executed only in the function nmi_cpu_setup(). Also, it renames the per-cpu function nmi_restore_registers() to nmi_cpu_restore_registers(). Signed-off-by: Robert Richter <robert.richter@amd.com>
* x86/oprofile: Fix cast of counter valueRobert Richter2009-07-142-5/+5
| | | | | | | | When casting the counter value to a 64 bit value in 32 bit mode, sign extension may lead to broken counter values. This patch fixes this by casting to (u64) instead of (s64). Signed-off-by: Robert Richter <robert.richter@amd.com>
*-. Merge commit 'v2.6.31-rc3'; commit 'tip/oprofile' into oprofile/coreRobert Richter2009-07-141-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/oprofile/oprofile_stats.c drivers/usb/otg/Kconfig drivers/usb/otg/Makefile Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | x86/oprofile: rename kernel parameter for architectural perfmon to arch_perfmonRobert Richter2009-07-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | The short name of the achitecture is 'arch_perfmon'. This patch changes the kernel parameter to use this name. Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | x86: oprofile/op_model_amd.c set return values for op_amd_handle_ibs()Jaswinder Singh Rajput2009-06-181-2/+5
| |/ |/| | | | | | | | | | | | | | | | | | | | | op_amd_handle_ibs() should return 0 when IBS is not present or not defined. Fix compilation warning: CC [M] arch/x86/oprofile/op_model_amd.o arch/x86/oprofile/op_model_amd.c: In function ‘op_amd_handle_ibs’: arch/x86/oprofile/op_model_amd.c:217: warning: no return statement in function returning non-void Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
* | x86/oprofile: fix initialization of arch_perfmon for core_i7Robert Richter2009-06-121-2/+3
| | | | | | | | | | | | | | | | | | | | | | Commit: e419294 x86/oprofile: moving arch_perfmon counter setup to op_x86_model_spec.init introduced a bug in the initialization of core_i7 leading to the incorrect model setup to &op_ppro_spec. This patch fixes this. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | Merge commit 'tip/perfcounters-for-linus' into oprofile/masterRobert Richter2009-06-123-4/+13
|\| | | | | | | | | | | | | Conflicts: arch/x86/oprofile/op_model_ppro.c Signed-off-by: Robert Richter <robert.richter@amd.com>
| * Merge branch 'linus' into perfcounters/coreIngo Molnar2009-06-111-4/+23
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/kernel/irqinit.c arch/x86/kernel/irqinit_64.c arch/x86/kernel/traps.c arch/x86/mm/fault.c include/linux/sched.h kernel/exit.c
| | * Merge branch 'oprofile-for-linus' of ↵Linus Torvalds2009-06-101-4/+23
| | |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: oprofile: introduce module_param oprofile.cpu_type oprofile: add support for Core i7 and Atom oprofile: remove undocumented oprofile.p4force option oprofile: re-add force_arch_perfmon option
| * | | Merge branch 'linus' into perfcounters/coreIngo Molnar2009-06-011-1/+1
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | Merge reason: merge almost-rc8 into perfcounters/core, which was -rc6 based - to pick up the latest upstream fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | Merge branch 'linus' into perfcounters/core-v2Ingo Molnar2009-04-061-1/+1
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge reason: we have gathered quite a few conflicts, need to merge upstream Conflicts: arch/powerpc/kernel/Makefile arch/x86/ia32/ia32entry.S arch/x86/include/asm/hardirq.h arch/x86/include/asm/unistd_32.h arch/x86/include/asm/unistd_64.h arch/x86/kernel/cpu/common.c arch/x86/kernel/irq.c arch/x86/kernel/syscall_table_32.S arch/x86/mm/iomap_32.c include/linux/sched.h kernel/Makefile Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * \ \ \ Merge commit 'v2.6.29-rc7' into perfcounters/coreIngo Molnar2009-03-041-2/+12
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/mm/iomap_32.c
| * | | | | perfcounters: fix "perf counters kills oprofile" bug, v2Ingo Molnar2009-02-051-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix kernel crash Both oprofile and perfcounters register an NMI die handler, but only one can handle the NMI. Conveniently, oprofile unregisters it's notifier when not actively in use, so setting it's notifier priority higher than perfcounter's allows oprofile to borrow the NMI for the duration of it's run. Tested/works both as module and built-in. While testing, I found that if kerneltop was generating NMIs at very high frequency, the kernel may panic when oprofile registered it's handler. This turned out to be because oprofile registers it's handler before reset_value has been allocated, so if an NMI comes in while it's still setting up, kabOom. Rather than try more invasive changes, I followed the lead of other places in op_model_ppro.c, and simply returned in that highly unlikely event. (debug warnings attached) Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | perfcounters: fix "perf counters kill oprofile" bugMike Galbraith2009-02-041-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With oprofile as a module, and unloaded by profiling script, both oprofile and kerneltop work fine.. unless you leave kerneltop running when you start profiling, then you may see badness. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | Merge commit 'v2.6.29-rc1' into perfcounters/coreIngo Molnar2009-01-111-133/+91
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: include/linux/kernel_stat.h
| * | | | | | x86, perfcounters: rename intel_arch_perfmon.h => perf_counter.hIngo Molnar2008-12-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: rename include file We'll be providing an asm/perf_counter.h to the generic perfcounter code, so use the already existing x86 file for this purpose and rename it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | | | x86/oprofile: introduce oprofile_add_data64()Robert Richter2009-06-111-18/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IBS implemention writes 64 bit register values to the cpu buffer by writing two 32 values using oprofile_add_data(). This patch introduces oprofile_add_data64() to write a single 64 bit value to the buffer. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: use 64 bit values in IBS functionsRobert Richter2009-06-111-70/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IBS code internally uses 32 bit values (a low and a high value) to represent a 64 bit value. This patch changes this and now 64 bit values are used instead. 64 bit MSR functions can be used now. No functional changes. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: remove some local variables in MSR save/restore functionsRobert Richter2009-06-111-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch removes some local variables in these functions. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: use 64 bit values to save MSR statesRobert Richter2009-06-112-27/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes struct op_saved_msr and replaces it by an u64 variable. This makes code easier and it is possible to use 64 bit MSR functions. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: use 64 bit wrmsr functionsRobert Richter2009-06-112-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch replaces some wrmsr() functions with wrmsrl(). Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: replace CTR*_IS_RESERVED macrosRobert Richter2009-06-114-18/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch replaces all CTR*_IS_RESERVED macros. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: replace CTRL_SET_*ACTIVE macrosRobert Richter2009-06-113-18/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch replaces all CTRL_SET_*ACTIVE macros. 64 bit MSR functions and 64 bit counter values are used now. The code uses bit masks from <asm/intel_arch_perfmon.h>. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: replace CTR_OVERFLOWED macrosRobert Richter2009-06-113-17/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch replaces all CTR_OVERFLOWED macros. 64 bit MSR functions and 64 bit counter values are used now. Thus, it will be easier to later extend the models to use more than 32 bit width counters. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: replace macros to calculate control registerRobert Richter2009-06-114-45/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces op_x86_get_ctrl() to calculate the value of the performance control register. This is generic code usable for all models. The event and reserved masks are model specific and stored in struct op_x86_model_spec. 64 bit MSR functions are used now. The patch removes many hard to read macros used for ctrl calculation. The function op_x86_get_ctrl() is common code and the first step to further merge performance counter implementations for x86 models. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: pass the model to setup_ctrs() functionsRobert Richter2009-06-115-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In follow-on patches the setup_ctrs() functions will need data that describes the model. This patch extends the function argument list to pass a pointer of the model to these function. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: remove unused macros for AMD virtualization profilingRobert Richter2009-06-111-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The use of the macros has no effect. The oprofilefs has to be extended first to support these features. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: fix and cleanup CTRL_SET_* macrosRobert Richter2009-06-112-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes missing braces around macro parameters. Macro definitions from intel_arch_perfmon.h are used where possible. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: remove MSR macros for p4 cpusRobert Richter2009-06-111-20/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The macros CTRL_READ() and CTRL_WRITE() make the code hard to read and maintain. This patch replaces them by rdmsr()/wrmsr() functions and simplifies the code. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: remove MSR macros for ppro cpusRobert Richter2009-06-111-11/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The macros CTRL_READ() and CTRL_WRITE() make the code hard to read and maintain. This patch replaces them by rdmsr()/wrmsr() functions and simplifies the code. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: remove MSR macros for AMD cpusRobert Richter2009-06-111-17/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The macros CTRL_READ() and CTRL_WRITE() make the code hard to read and maintain. This patch replaces them by rdmsr()/wrmsr() functions and simplifies the code. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: move common macros to op_x86_model.hRobert Richter2009-06-114-18/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are duplicate macro implementations in model specific code. This patch moves all common macros to op_x86_model.h. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: simplify AMD cpu init codeRobert Richter2009-06-111-8/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: remove #ifdefs in ibs functionsRobert Richter2009-06-111-34/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IBS code is moved to separate functions. This allows the removal of #ifdefs in functions. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: minor style changes in struct op_x86_model_specRobert Richter2009-06-111-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some vertical alignments. Variables are now located in the beginning of the struct. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | x86/oprofile: moving arch_perfmon counter setup to op_x86_model_spec.initRobert Richter2009-06-103-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function arch_perfmon_init() in nmi_int.c is model specific. This patch moves it to op_model_ppro.c by using the init function pointer in struct op_x86_model_spec. Cc: Andi Kleen <ak@linux.intel.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | Revert "oprofile: discover counters for op ppro too"Robert Richter2009-06-102-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 59512900baab03c5629f2ff5efad1d5d4e682ece. arch_perfmon_setup_counters() is actually never called for ppro, so there is no code that changes the numbers in op_ppro_spec. The patch as it is has no effect. Cc: Andi Kleen <ak@linux.intel.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | | Merge commit 'v2.6.30' into oprofile/masterRobert Richter2009-06-101-1/+1
|\ \ \ \ \ \ \ | | |_|_|_|/ / | |/| | | | / | |_|_|_|_|/ |/| | | | |
| * | | | | x86, 32-bit: fix kernel_trap_sp()Masami Hiramatsu2009-05-121-1/+1
| | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use &regs->sp instead of regs for getting the top of stack in kernel mode. (on x86-64, regs->sp always points the top of stack) [ Impact: Oprofile decodes only stack for backtracing on i386 ] Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> [ v2: rename the API to kernel_stack_pointer(), move variable inside ] Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: systemtap@sources.redhat.com Cc: Harvey Harrison <harvey.harrison@gmail.com> Cc: Jan Blunck <jblunck@suse.de> Cc: Christoph Hellwig <hch@infradead.org> LKML-Reference: <20090511210300.17332.67549.stgit@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | oprofile: introduce module_param oprofile.cpu_typeRobert Richter2009-05-081-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes module_param oprofile.force_arch_perfmon and introduces oprofile.cpu_type=archperfmon instead. This new parameter can be reused for other models and architectures. Currently only archperfmon is supported. Cc: Andi Kleen <ak@linux.intel.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | oprofile: add support for Core i7 and AtomAndi Kleen2009-05-081-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The registers are about the same as other Family 6 CPUs so we only need to add detection. I'm not completely happy with calling Nehalem Core i7 because there will be undoubtedly other Nehalem based CPUs in the future with different marketing names, but it's the best we got for now. Requires updated oprofile userland for the new event files. If you don't want to update right now you can also use oprofile.force_arch_perfmon=1 (added in the next patch) with 0.9.4 Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | oprofile: remove undocumented oprofile.p4force optionAndi Kleen2009-05-081-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are no new P4s and the oprofile code knows about all existing ones, so we don't really need the p4force option anymore. Remove it. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-08 04:05:49 +0000